Transaction not yet indexed

1iS3g2QiccjWsd3VnnCSMmAg9ugi6VfJ1AAGpVPWxf29qpw3g7fD5wXRqeJDvo179mNg2P6MmTfWzKzw6UTRJr6

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.